Statistical Measures and Summarize Data

Eight homerooms in a middle school had the following distribution of students. What is the MAD of students?

• 1.25

• 1.625

• 2.25

• 2.8

For each of 7 weeks babysitting, Kelly

made the following dollar amounts:

16, 28, 28, 32, 21, 18, and 35. What is

the first quartile of this data?

McKenna kept track of the number of

miles she rode her horse each day for

2 weeks.

3, 2.5, 5, 2.5, 8, 10, 4, 0, 6, 6, 2, 2, 6, 9

What measure of center best summarize McKenna’s data?

• median

• mode

• mean

What measure of variability best summarize McKenna’s data.

• IQR

• MAD

Which is a statistical question that could have been asked to collect the data shown in the dot plot?

• How many times did you buy a school lunch last week?

• How many days were in last month?

• Is your favorite number between 0 and 5?

• What is the perimeter of a 1.5 inch × 1 inch index card?

The data set shows the distance, in miles, to school for 10 students. 2, 3, 4, 4, 2, 3, 4, 3, 4, 2
The median is 3 and the mode is 4.

• Yes

• No

The data show the average monthly temperatures, in degrees Fahrenheit, for a city during a 12-month period:

50, 56, 61, 65, 73, 81, 76, 63, 61, 41, 45, 48

What is the MAD for this set of data in degrees Fahrenheit?

The histogram shows the number of hours per week that students in Mrs. Green’s class spend playing sports.

According to the histogram, how many students spend between 6 and 11 hours per week playing sports?

Eight middle school bands in a competition had the following distribution of band members. What is the MAD of band members?

• 0

• 1.75

• 2.25

• 3.5